Wouldn't just some basic paired exercises in balance breaking and ones for checking posture help such a person to become aware of the problems they are having when executing techniques?

Sure, but that was just one example. What sort of teaching and/or thoughts can we provide to the student to allow him to realize himself that he's making these kinds of mistakes so he can try to fix it himself?

Thanks for the link, Paul. I haven't had a chance to read what was contained there, but I will...